if{? > <?} What is the usage in the brackets? Have you never seen it?
PHP中文网2017-09-26 09:09:07
? > <? Behind <? is the abbreviation of <?php. HTML code snippets can be inserted between ?><?php, just like Servlet in Java. This is a procedural way of writing, a mix of php and html. For formal projects, it is recommended to use a template engine or framework and a three-layer separation design pattern.